光纤温度传感器输出特性研究  

Investigation on Output Properties of Optic-Fiber Temperature Sensor

作　　者：雷晓梅[1] 陈长乐[1] 

机构地区：[1]西北工业大学理学院

出　　处：《光子学报》2007年第2期324-327,共4页Acta Photonica Sinica

摘　　要：设计了一种基于半导体光吸收原理用于对环境温度进行测量的光纤温度传感器.该传感器使用砷化镓晶体为温度敏感材料,采用透射式探头结构,以塑料光纤为传光介质,具有结构简单、可靠、成本低的特点;通过实验研究了采用不同光源时传感器系统的输出随温度的变化关系,分析了光源的光谱特性对传感器系统的测温范围及灵敏度的影响;最后提出一种采用双波长补偿系统提高系统抗干扰能力和稳定性的改进意见.A new optic-fiber temperature sensor based on the spectrum absorption characteristic of semiconductor used to measure the environmental temperature is designed. The sensor is composed of GaAs semiconductor platelets, transmitted probe configuration and POF beam guarding. And it is simple in structure, low in cost and reliable. Its output properties are investigated through experimental method by using the different light source. The relations between the light source spectrum property and the sensor temperature-measuring rang and its sensitivity are analyzed according to the experimental data. At last an improved opinion using two wavelength compensating system to solve the problems of the disturbance effect and instability in the sensor is indicated.

关 键 词：光纤温度传感器 半导体光吸收 光源 双波长补偿系统 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]